如何使用多数据源,同时使用jpa和jdbctemplate

spring:

 datasource:

    first:

    type: com.alibaba.druid.pool.DruidDataSource

    url: jdbc:mysql://xx.xx.xx.xx:xx/xx?characterEncoding=utf8

    driver-class-name: com.mysql.jdbc.Driver

    username: xx

    password: xx

    #配置监控统计拦截的filters，去掉监控界面sql将无法统计，'wall'用于防火墙

    filters: stat,wall,log4j

    #最大活跃数

    maxActive:

    #初始化连接数

    initialSize:

    #最大连接等待超过时间

    maxWait:

    #打开PSCache，并且指定每个连接PSCache的大小

    poolPreparedStatements: true

    maxPoolPreparedStatementPerConnectionSize:

    #通过connectionProperties属性来打开mergeSql功能；慢SQL记录

    connectionProperties: druid.stat.mergeSql=true;druid.stat.slowSqlMillis=

    minIdle:

    timeBetweenEvictionRunsMillis:

    minEvictableIdleTimeMillis:

    validationQuery: select  from dual

    testWhileIdle: true

    testOnBorrow: false

    testOnReturn: false

  sec:

     type: com.alibaba.druid.pool.DruidDataSource

     url: jdbc:mysql://xx.xx.xx.xx:3306/xx?characterEncoding=utf8

     driver-class-name: com.mysql.jdbc.Driver

     username: xx

     password: xx

     #配置监控统计拦截的filters，去掉监控界面sql将无法统计，'wall'用于防火墙

     filters: stat,wall,log4j

     #最大活跃数

     maxActive:

     #初始化连接数

     initialSize:

     #最大连接等待超过时间

     maxWait:

     #打开PSCache，并且指定每个连接PSCache的大小

     poolPreparedStatements: true

     maxPoolPreparedStatementPerConnectionSize:

     #通过connectionProperties属性来打开mergeSql功能；慢SQL记录

     connectionProperties: druid.stat.mergeSql=true;druid.stat.slowSqlMillis=

     minIdle:

     timeBetweenEvictionRunsMillis:

     minEvictableIdleTimeMillis:

     validationQuery: select  from dual

     testWhileIdle: true

     testOnBorrow: false

     testOnReturn: false

配置文件

@ServletComponentScan

@Configuration

public class DatasourceConfiguration {

    private Logger logger = LoggerFactory.getLogger(DatasourceConfiguration.class);

    @Value("${spring.datasource.first.url}")

    private String firstdevUrl;

    @Value("${spring.datasource.first.username}")

    private String firstUsername;

    @Value("${spring.datasource.first.password}")

    private String firstPassword;

    @Value("${spring.datasource.sec.url}")

    private String secUrl;

    @Value("${spring.datasource.sec.username}")

    private String secUsername;

    @Value("${spring.datasource.sec.password}")

    private String secPassword;

    @Value("com.mysql.jdbc.Driver")

    private String driverClassName;

    @Value("5")

    private int initialSize;

    @Value("5")

    private int minIdle;

    @Value("20")

    private int maxActive;

    @Value("60000")

    private int maxWait;

    /**

     * 配置间隔多久才进行一次检测，检测需要关闭的空闲连接，单位是毫秒

     */

    @Value("60000")

    private int timeBetweenEvictionRunsMillis;

    /**

     * 配置一个连接在池中最小生存的时间，单位是毫秒

     */

    @Value("300000")

    private int minEvictableIdleTimeMillis;

    @Value("SELECT 1 FROM DUAL")

    private String validationQuery;

    @Value("true")

    private boolean testWhileIdle;

    @Value("false")

    private boolean testOnBorrow;

    @Value("false")

    private boolean testOnReturn;

    /**

     * 打开PSCache，并且指定每个连接上PSCache的大小

     */

    @Value("true")

    private boolean poolPreparedStatements;

    @Value("20")

    private int maxPoolPreparedStatementPerConnectionSize;

    /**

     * 配置监控统计拦截的filters，去掉后监控界面sql无法统计，'wall'用于防火墙

     */

    @Value("stat,wall,log4j")

    private String filters;

    /**

     * 通过connectProperties属性来打开mergeSql功能；慢SQL记录

     */

    @Value("druid.stat.mergeSql=true;druid.stat.slowSqlMillis=500")

    private String connectionProperties;

    @Bean(name = "secDatasource")

    @Qualifier("secDatasource")

    @ConfigurationProperties(prefix = "spring.datasource.sec")

    public DataSource secDataSource() {

        return getDruidDataSource(secUsername, secPassword, secUrl);

    }

    @Bean(name = "firstDatasource")

    @Qualifier("firstDatasource")

    @Primary

    @ConfigurationProperties(prefix = "spring.datasource.first")

    public DataSource firstDataSource() {

        return getDruidDataSource(firstUsername, firstPassword, firstUrl);

    }

    private DruidDataSource getDruidDataSource(String username, String password, String url) {

        DruidDataSource datasource = new DruidDataSource();

        datasource.setUrl(url);

        datasource.setUsername(username);

        datasource.setPassword(password);

        datasource.setDriverClassName(driverClassName);

        //configuration

        datasource.setInitialSize(initialSize);

        datasource.setMinIdle(minIdle);

        datasource.setMaxActive(maxActive);

        datasource.setMaxWait(maxWait);

        datasource.setTimeBetweenEvictionRunsMillis(timeBetweenEvictionRunsMillis);

        datasource.setMinEvictableIdleTimeMillis(minEvictableIdleTimeMillis);

        datasource.setValidationQuery(validationQuery);

        datasource.setTestWhileIdle(testWhileIdle);

        datasource.setTestOnBorrow(testOnBorrow);

        datasource.setTestOnReturn(testOnReturn);

        datasource.setPoolPreparedStatements(poolPreparedStatements);

        datasource.setMaxPoolPreparedStatementPerConnectionSize(maxPoolPreparedStatementPerConnectionSize);

        try {

            datasource.setFilters(filters);

        } catch (SQLException e) {

            logger.error("druid configuration initialization filter : {0}", e);

        }

        datasource.setConnectionProperties(connectionProperties);

        return datasource;

    }

}

配置数据源

package com.ipinyou.mip.configuration;

import org.springframework.boot.web.servlet.FilterRegistrationBean;

import org.springframework.boot.web.servlet.ServletRegistrationBean;

import org.springframework.context.annotation.Bean;

import org.springframework.context.annotation.Configuration;

import com.alibaba.druid.support.http.StatViewServlet;

import com.alibaba.druid.support.http.WebStatFilter;

/**

 * 这样的方式不需要添加注解：@ServletComponentScan

 * Created by Administrator on 2018/2/28.

 */

@Configuration

public class DruidConfiguration {

    @Bean

    public ServletRegistrationBean statViewServlet(){

        //创建Servlet，注册实体

        ServletRegistrationBean servletRegistrationBean = new ServletRegistrationBean(new StatViewServlet(),"/druid/*");

        //设置ip白名单

        servletRegistrationBean.addInitParameter("allow","xx.xx.xx.xx");

        //设置ip黑名单，如果deny和allow共同存在时，deny优先于allow

        servletRegistrationBean.addInitParameter("deny","xx.xx.xx.xx");

        //设置控制台管理用户

        servletRegistrationBean.addInitParameter("loginUsername","xxx");

        servletRegistrationBean.addInitParameter("loginPassword","xxx");

        //是否可以重置数据

        servletRegistrationBean.addInitParameter("resetEnable","false");

        return servletRegistrationBean;

    }

    @Bean

    public FilterRegistrationBean statFilter(){

        //创建过滤器

        FilterRegistrationBean filterRegistrationBean = new FilterRegistrationBean(new WebStatFilter());

        //设置过滤器过滤路径

        filterRegistrationBean.addUrlPatterns("/*");

        //忽略过滤形式

        filterRegistrationBean.addInitParameter("exclusions","*.js,*.gif,*.jpg,*.png,*.css,*.ico,/druid/*");

        return filterRegistrationBean;

    }

}

设置数据源的过滤器

package com.ipinyou.mip.configuration;

import java.util.Map;

import javax.persistence.EntityManager;

import javax.sql.DataSource;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.beans.factory.annotation.Qualifier;

import org.springframework.boot.autoconfigure.orm.jpa.HibernateSettings;

import org.springframework.boot.autoconfigure.orm.jpa.JpaProperties;

import org.springframework.boot.orm.jpa.EntityManagerFactoryBuilder;

import org.springframework.context.annotation.Bean;

import org.springframework.context.annotation.Configuration;

import org.springframework.context.annotation.Primary;

import org.springframework.data.jpa.repository.config.EnableJpaRepositories;

import org.springframework.orm.jpa.JpaTransactionManager;

import org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean;

import org.springframework.transaction.PlatformTransactionManager;

import org.springframework.transaction.annotation.EnableTransactionManagement;

@Configuration

@EnableTransactionManagement

@EnableJpaRepositories(entityManagerFactoryRef = "entityManagerFactoryPrimary",

        transactionManagerRef = "transactionManagerPrimary",

        basePackages = {"xx.xx.xxx","xx.xx.xx"})//设置dao（repo）所在位置

public class JpaConfiguration {

    @Autowired

    @Qualifier("firstDatasource")

    private DataSource firstDataSource;

    @Primary

    @Bean(name = "entityManagerFirst")

    public EntityManager entityManager(EntityManagerFactoryBuilder builder) {

        return entityManagerFactoryPrimary(builder).getObject().createEntityManager();

    }

    @Autowired

    private JpaProperties jpaProperties;

    private Map<String, Object> getVendorProperties() {

        return jpaProperties.getHibernateProperties(new HibernateSettings());

    }

    /**

     * 设置实体类所在位置

     */

    @Primary

    @Bean(name = "entityManagerFactoryPrimary")

    public LocalContainerEntityManagerFactoryBean entityManagerFactoryPrimary(EntityManagerFactoryBuilder builder) {

        return builder

                .dataSource(mipdevDataSource)

                .packages("xx.xx.xx.xx")

                .properties(getVendorProperties())

                .persistenceUnit("firstManageFactory")

                .properties(getVendorProperties())

                .build();

    }

    @Primary

    @Bean(name = "transactionManagerPrimary")

    public PlatformTransactionManager transactionManagerPrimary(EntityManagerFactoryBuilder builder) {

        return new JpaTransactionManager(entityManagerFactoryPrimary(builder).getObject());

    }

}

firstJpaConfiguration

package com.ipinyou.mip.configuration;

import java.util.Map;

import javax.persistence.EntityManager;

import javax.sql.DataSource;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.beans.factory.annotation.Qualifier;

import org.springframework.boot.autoconfigure.orm.jpa.HibernateSettings;

import org.springframework.boot.autoconfigure.orm.jpa.JpaProperties;

import org.springframework.boot.orm.jpa.EntityManagerFactoryBuilder;

import org.springframework.context.annotation.Bean;

import org.springframework.context.annotation.Configuration;

import org.springframework.data.jpa.repository.config.EnableJpaRepositories;

import org.springframework.orm.jpa.JpaTransactionManager;

import org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean;

import org.springframework.transaction.PlatformTransactionManager;

import org.springframework.transaction.annotation.EnableTransactionManagement;

@Configuration

@EnableTransactionManagement

@EnableJpaRepositories(entityManagerFactoryRef = "entityManagerFactorySec",

        transactionManagerRef = "transactionManagerSec",

        basePackages = {"xx.xx.xx"})//设置dao（repo）所在位置

public class JpaSecConfiguration {

    @Autowired

    @Qualifier("secDatasource")

    private DataSource secDatasource;

    @Bean(name = "entityManagerAmp")

    public EntityManager entityManager(EntityManagerFactoryBuilder builder) {

        return entityManagerFactoryAmp(builder).getObject().createEntityManager();

    }

    @Autowired

    private JpaProperties jpaProperties;

    private Map<String, Object> getVendorProperties() {

        return jpaProperties.getHibernateProperties(new HibernateSettings());

    }

    /**

     * 设置实体类所在位置

     */

    @Bean(name = "entityManagerFactorySec")

    public LocalContainerEntityManagerFactoryBean entityManagerFactoryAmp(EntityManagerFactoryBuilder builder) {

        return builder

                .dataSource(secDatasource)

                .packages("xx.xx.xx")

                .properties(getVendorProperties())

                .persistenceUnit("secManageFactory")

                .properties(getVendorProperties())

                .build();

    }

    @Bean(name = "transactionManagerSec")

    public PlatformTransactionManager transactionManagerAmp(EntityManagerFactoryBuilder builder) {

        return new JpaTransactionManager(entityManagerFactorySec(builder).getObject());

    }

}

secJpaConfiguration

package com.ipinyou.mip.configuration;

import javax.sql.DataSource;

import org.springframework.beans.factory.annotation.Qualifier;

import org.springframework.context.annotation.Bean;

import org.springframework.context.annotation.Configuration;

import org.springframework.context.annotation.Import;

import org.springframework.jdbc.core.JdbcTemplate;

@Configuration

@Import(DatasourceConfiguration.class)

public class JdbcTemplateConfiguration {

    @Bean(name = "secJdbcTemplate")

    public JdbcTemplate primaryJdbcTemplate(

            @Qualifier("secDatasource") DataSource dataSource) {

        return new JdbcTemplate(dataSource);

    }

    @Bean(name = "firstJdbcTemplate")

    public JdbcTemplate threeJdbcTemplate(

            @Qualifier("firstDatasource") DataSource dataSource) {

        return new JdbcTemplate(dataSource);

    }

}

JdbcTemplateConfiguration

/**

 * 提供了一系列数据库查询方法

 *

 * @author guodong.zhang

 */

public class CommonDao<E, PK extends Serializable> {

    @PersistenceContext(unitName = "secManageFactory")

    protected EntityManager em;

   /**

     * 相当于jdbctemplate的queryForlist 返回List<Map<String, Object>>

     *

     * @param sql

     * @return

     */

    public List<Map<String, Object>> queryForList(String sql) {

        Query nativeQuery = em.createNativeQuery(sql);

        nativeQuery.unwrap(SQLQuery.class).setResultTransformer(Transformers.ALIAS_TO_ENTITY_MAP);

        List<Map<String,Object>> resultList = nativeQuery.getResultList();

        return resultList;

    }

}

具体使用

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